*SHP Section

22APR25

Type
Optional section

Description
Specify alternative (ie non-Voigt) line shapes for line-by-line calculation

Structure
Multiple records, any order
Record Structure
SHPNAM GAS(1) GAS(2) ... GAS(n)
FieldTypeDescription
SHPNAM C3 Lineshape to be used
GAS C7 Molecule to which lineshape is applied, or '*'
Allowed values for SHPNAM
FieldDescription
VOI Voigt Lineshape
LOR Lorentz Lineshape
DOP Doppler Lineshape
VVW or VAN Van Vleck Weisskopf Lineshape
CHI Voigt plus Chi-factor

Notes
  1. As RFM *SHP section.

Example
An unrealistically complicated example ...
*SHP
     Chi-factor  CO2    ! Use CO2 sub-Lorentzian wings
     LORENTZ  H2O CH4   ! Use Lorentz shape for H2O and CH4
     LORENTZ  N2O       ! Also N2O
     VOI         *      ! Use Voigt shape for all other absorbers [default anyway]
     DOPP CO            ! Doppler shape for CO
Type
Optional Section

Description
Limit range of pixels (=profile locations) to be retrieved
Default is to retrieve every pixel in L1C file

Structure
1 or 2 fields, same type, order is significant
Field Type Description Range
IPIX1 I 1st pixel to be retrieved 1 : NPIX (or NSCN)
[IPIX2] I (Optional) last pixel to be retrieved IPIX1 : NPIX (or NSCN)

Notes
  1. If only IPIX1 is specified then the processing starts with this pixel number and continues to the end of the L1C file
  2. If IPIX2 is specified with a value greater than the number of pixels in the file then a warning message is printed to the log file and processing continues to the last pixel in the L1C file
  3. To process just a single pixel, specify identical values for IPIX1 and IPIX2

Example
*PIX
   1 10  ! Process just the first 10 pixels
----

Description
Vibrational temperature filenames

Structure
Multiple fields, single type, order is not significant.
Field Type Description
PIXFIL C200 Name of .pix file

Notes
  1. MORSE will accept vibrational temperatures using either the RFM .pix files (epixred in this section) or, more simply, within standard .atm files using the *[gas][iso][vib] label.

  2. Look Up Tables cannot be used in conjunction with non-LTE calculations.

Example
*PIX co2_day_200km.pix ! mid-lat daytime vib.temps